/Engine/Source/Runtime/MoviePlayer/Public/MoviePlayer.h
Initializes this movie player, creating the startup window and hiding the splash screen. To be called in the launch engine loop.
void Initialize ( class [FSlateRenderer](API\Runtime\SlateCore\Rendering\FSlateRenderer) & InSlateRenderer, [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SWindow](API\Runtime\SlateCore\Widgets\SWindow) > RenderTarget )